Answer:
The answer is B) 7.
Explanation:
[tex]4*n=28\\[/tex]
The only thing you would have to do is divide each side by 4.
[tex]\frac{4*n}{4} =\frac{28}{4}[/tex]
Next cross out like terms and divide where needed.
[tex]n=7[/tex]
And there is your answer.
Good Luck. :)